Chemical Reactions Vocabulary

Front

What is a chemical reaction?

Back

The process by which one or more substances change to produce one or more different substances.

Front

Define reactant.

Back

A substance that takes part in and undergoes change during a reaction.

Front

What is a product in a chemical reaction?

Back

A substance produced during a chemical reaction.

Front

What is a precipitate?

Back

A solid that forms when two liquids are mixed.

Front

Define properties in the context of chemistry.

Back

Physical and chemical characteristics of matter used to describe or identify a substance.

Front

What is a physical change?

Back

A change that does not alter the chemical composition of a substance.

Front

What is a chemical change?

Back

A process that changes substances into new substances.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is an exothermic reaction?

Back

A chemical reaction that releases energy in the form of heat.

Front

What is an endothermic reaction?

Back

A chemical reaction that absorbs energy from its surroundings.